Evaluate
\frac{21}{2}=10.5
Factor
\frac{3 \cdot 7}{2} = 10\frac{1}{2} = 10.5
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\frac{1}{2}\left(15+6\right)
Add 7 and 8 to get 15.
\frac{1}{2}\times 21
Add 15 and 6 to get 21.
\frac{21}{2}
Multiply \frac{1}{2} and 21 to get \frac{21}{2}.
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